Measurement of exclusive γγ→W + W − production and search for exclusive Higgs boson production in pp collisions at s √ =8  TeV using the ATLAS detector

Allbrooke, Benedict, Asquith, Lily, Cerri, Alessandro, Chavez Barajas, Carlos, De Santo, Antonella, Potter, Tina, Salvatore, Fabrizio, Santoyo Castillo, Itzebelt, Suruliz, Kerim, Sutton, Mark, Vivarelli, Iacopo and The Atlas Collaboration, et al. (2016) Measurement of exclusive γγ→W + W − production and search for exclusive Higgs boson production in pp collisions at s √ =8  TeV using the ATLAS detector. Physical Review D, 94. 032011. ISSN 1550-7998

[img] PDF - Published Version
Available under License Creative Commons Attribution.

Download (1MB)

Abstract

Searches for exclusively produced W boson pairs in the process pp(γγ)→pW + W − p and an exclusively produced Higgs boson in the process pp(gg)→pHp have been performed using e ± μ ∓ final states. These measurements use 20.2  fb −1 of pp collisions collected by the ATLAS experiment at a center-of-mass energy s √ =8  TeV at the LHC. Exclusive production of W + W − consistent with the Standard Model prediction is found with 3.0σ significance. The exclusive W + W − production cross section is determined to be σ(γγ→W + W − →e ± μ ∓ X)=6.9±2.2(stat)±1.4(sys)  fb , in agreement with the Standard Model prediction. Limits on anomalous quartic gauge couplings are set at 95% confidence level as −1.7×10 −6 <a W 0 /Λ 2 <1.7×10 −6   GeV −2 and −6.4×10 −6 <a W C /Λ 2 <6.3×10 −6   GeV −2 . A 95% confidence-level upper limit on the total production cross section for an exclusive Higgs boson is set to 1.2 pb.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 24 Oct 2016 15:13
Last Modified: 15 Mar 2017 01:07
URI: http://sro.sussex.ac.uk/id/eprint/64968

View download statistics for this item

📧 Request an update